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Home -> Community -> Mailing Lists -> Oracle-L -> Re: One last question
I've definitely got to pay more attention when I cut and
paste addresses. Well, never mind my question below. Thanks
to Wolfgang's help, I've got that one nailed.
Best regards,
Jonathan Gennick --- Brighten the corner where you are http://Gennick.com * 906.387.1698 * mailto:jonathan@gennick.com
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Friday, July 16, 2004, 9:01:58 PM, Jonathan Gennick (jonathan_at_gennick.com) wrote: JG> Wolfgang,
JG> One last question, and then I'm done for the night. Here's JG> that query again:
SQL>> SELECT *
JG> 2 FROM ( SELECT flag, TO_NUMBER(num) num
JG> 3 FROM subtest
JG> 4 WHERE flag IN ('A', 'C') )
JG> 5 WHERE num > 0;
JG> ERROR:
JG> ORA-01722: invalid number
JG> How can I know whether it is "num > 0" that is causing the
JG> error? Could it be that TO_NUMBER(num) is being evaluated
JG> *before* the subquery's WHERE clause filters out rows NOT IN
JG> ('A', 'C')?
JG> In other words, how can I know that the problem I'm seeing JG> is really the result of the two queries being merged?
JG> Best regards,
JG> Jonathan Gennick --- Brighten the corner where you are JG> http://Gennick.com * 906.387.1698 * mailto:jonathan@gennick.com
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